This is Ram from India

Winner from USA: Apnesh

Winner from India: shatrughna kumar

I thank you all for participating here. The permanent record of this update is posted on facebook page.

Vaishali Jain
Hyderabad
India

From Books Online (http://msdn.microsoft.com/en-us/library/ms175976.aspx)
If an error generated in a TRY block causes the state of the current transaction to be invalidated, the transaction is classified as an uncommittable transaction……….When a batch finishes, the Database Engine rolls back any active uncommittable transactions.

Matt Nelson, USA

1) The product will not be deleted from the CurrentProducts table.
2) The order details will not be inserted into the SalesInvoiceHeader table.

Because the TRY statement would generate the error, the CATCH would be executed instead. The code from the TRY block would never run. If any statement raises a level 11 or higher severity in the Try Block, it will not show the error from the calling code. It will run the code you have set up in the Catch Block.

Country of residence: USA

4.1) The product will not be deleted from the CurrentProducts table.
2) The order details will not be inserted into the SalesInvoiceHeader table.

Vinay,
Pune, India.

Noida, INDIA

4.
1) The product will not be deleted from the CurrentProducts table.
2) The order details will not be inserted into the SalesInvoiceHeader table.

Country : India

The product will not be deleted from the CurrentProducts table as it will violate the foreign key constraint . As ProductID is the foreign key in SalesInvoiceHeader Table and it references the ProductID of the CurrentProduct table where it acts as a primary key. and we are trying to delete the value of a column ProductID (CurrentProducts ) of which ProductID (SalesInvoiceHeader table) depends.

Sudeepta,
India.

4.
1) The product will not be deleted from the CurrentProducts table.
2) The order details will not be inserted into the SalesInvoiceHeader table.

Country : India

Country : India

Azhar Iqbal
From Lahore Pakistan.

I’ from INDIA

First of all, you cannot insert a foreign key when it’s primary key does not exist. This violates integrity constraints.
Second, since there is an exception, the commit does not occur.

Thanks
Vijay from USA

Thanks,
Basavaraj
India

Challenge:
Question 28
You have tables named CurrentProducts and SalesInvoiceHeader. The CurrentProducts table has a foreign key relationship with the SalesInvoiceHeader table on the ProductID column. You are deleting ProductID 77 from the Product table and then trying to insert a sale for Product77 into the SalesInvoiceHeader table.

BEGIN TRY
BEGIN TRANSACTION
DELETE FROM CurrentProducts WHERE ProductID = 77
BEGIN TRANSACTION
INSERT INTO SalesInvoiceHeader VALUES ( 95894, 77, 2 )
COMMIT TRANSACTION
COMMIT TRANSACTION
END TRY
BEGIN CATCH
ROLLBACK TRANSACTION
PRINT ERROR_MESSAGE()
END CATCH

What will be the outcome when you run this query?

1.1 The product will be deleted from the CurrentProducts table.
2) The order details will be inserted into the SalesInvoiceHeader table.
2.1) The product will be deleted from the CurrentProducts table.
2) The order details will not be inserted into the SalesInvoiceHeader table.
3.1) The product will not be deleted from the CurrentProducts table.
2) The order details will be inserted into the SalesInvoiceHeader table.
4.1) The product will not be deleted from the CurrentProducts table.
2) The order details will not be inserted into the SalesInvoiceHeader table.

Correct Answer:
The correct choice is #4:

4.1) The product will not be deleted from the CurrentProducts table.
2) The order details will not be inserted into the SalesInvoiceHeader table.

Explanation:
The insertion of the data into the SalesInvoiceHeader table will fail because the previous transaction deleted ProductID 77 from the table. Since the code above shows a nested transaction for the insertion of the SalesInvoiceHeader data, the error in that transaction will initiate the code in the Catch section, which will ROLLBACK both transactions, and then run the print any error messages that are generated from the ERROR_MESSAGE( ) function.

Country:
United States

Thanks for the knowledge!

Regards,

Bill Pepping

Country: United States

1) The product will not be deleted from the CurrentProducts table.
2) The order details will not be inserted into the SalesInvoiceHeader table.

Before commit we will get error and hence transaction will be rolled back.

Chetan – USA

Thanks.
Rajneesh Verma
(INDIA)

1) The product will not be deleted from the CurrentProducts table.
2) The order details will not be inserted into the SalesInvoiceHeader table.

India